Combined hot blast, water-coil, and gas-burner.



' No 846,916. A PATENTED MAR.12, 1907.

' J. B. BHRLIGH.

COMBINED HOT BLAST, WATER COIL, AND GAS BURNER. APPLICATION FILED 1330.2. 1904.

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n. c. THE NORRIS PETERS co, WASHINGTON,

PATENTED MAR. 12, 1907.

v 'J. B. EHRLIGH.

COMBINED HOT BLAST, WATER COIL, AND GASBURNER.

APPLICATION FILED DEG. 2, 1904.

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hz'ewiw? Liiwvfluivarl Witnesses.

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UNITE sTAns PATENT ornron.

JOHN B". EHRLICH, OF INDIANAPOLIS, INDIANA.

COMBINED HOT BLAST,'WATER-COIL, AND GAS-BURNER.

To all whmn it may concern:

Be it known that I, JOHN B. EiinLioi-i, a citi zen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and usefulImprovements in a Combined Hot- Blast, \Vater Coil, and Gas-Burner, of which the following is a specification.

This invention relatesto a combined hotblast conduit, water-coil, and gas-burner for ranges and stoves; and the object of the invention is to provide such a blast, coil, and burner which will supply and discharge a suf 'ficient quantity of both air and gas at the point of ignition to insure a perfect combustion and consumption of each.

The object, consists, further in providing a hot-blast conduit, water-coil, and gas-burner in which the parts are closely nested together in order to secure the best possible results.

A combined hot-blast conduit, watencoil, and gas-burner embodying my said inven tion will first be more particularly described in the annexed specification and the novel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a art hereof, and on-which similar numerals of reference indicate similar parts, Figure 1 is a fragmentary detail sectional view through the fire-pot of the range and shows the position occupied by the combined hot-blast conduit, water-coil, and gasburner in their operative and relative position to the fire-pot. Fig. 2 isa partial plan.

view of the hotblast conduit, water-coil, and

' gas-burner in which parts are broken away at various places in order to disclose the conptruction of the parts lying immediately be- In the drawings, 1 is the hot-blast conduit, which is composed of one piece of material and has the formation of an oblong, as shown in Fig. 2 of the drawings. The hot-blast conduit 1 has a channeled formation in transverse section, in which the integral walls 2 and 3 form the sides for the hot-blast conduit, and is also provided with an extended integrally-formed neck 1. The neck 4 of the hot-blast conduit 1 may extend to and connect with any suitable air-supply source, the latter being provided with a suitable valve for regulating the intake of air. The hotblast conduit 1 is of a width and length so that its inner dimension will encircle two of Specification of LettersPatent.

ratented March 12, 1907.

Application fil d December 2,1904. Serial No. 235,240.

the plate-holes-formed in the range or stove top and is also provided with a plurality of dependent ears 6 at its upper edge, and with the. use of suitable securing means the said blast may be rigidly secured to the under side of the range or stove top. The side walls2 and 3 of the hot-blast conduit 1 snugly fit against the under side of said top to prevent, as far as possible, the escapement of air between said edges and said top. The inner wall 3 of hot-blast conduit 1, however, is pro vided with a series of slots 10, through which the air is discharged and distributed around and above the path of ignition, causing a more perfect combustion of the gas and secur ing a greater number of heat units.

Lying immediately below and in contact with the hot-blast conduit 1 is a water-coil 12, formed of a piece of pipe or tube and bent until its general outline corresponds to the contour of the hot-blast conduit 1. The endsof the water-coil lead to the outside of the range or stove, where they connect with a suitable water-supply pipe and with an ordinary tank for holding the heated water,

Lying immediately below the water-coil 12 is the gas-burner 15, the general outlines of which assume an oblong and which is preferably formed of two members that jointly form the burner unit. These members forming the burner are composed of the channeled members 15 and covers 16, secured together by means of the screws 17. The con caved formation of the members 15 and covers 16 form a tube for the reception of the gas within. The covers 16 are provided with numerous perforations 18, which are formed along the edges of said covers and at such other portions thereof as may be desired, so that a perfect mixture and distribution of the gas and air is secured.

As previously mentioned, the burner may be composed of one piece of material, if desired, with a division-wall located approximately in the center of the side branchesof the burner, so that one end thereof could be employed independently of the other. These division-walls in the burner would prevent thegas from'leaking from that side of the burner which is in use to that portion which is not in use. In this construction, however, a perfect joint is necessary at the partitionwalls, and I have found it expedient to form the burner in two parts, as shown in the drawings, and thereby absolutely defining the fire area. Each portion of the burner is provided with a gas-inlet 20, that extends through the neck 21, formed integrally therewith. The neck 21 extends to the outside of the range or stove and terminates within a gas-mixer22,which is secured to the ran e or stove body. The mixer 22 is of any 0 d and well-known variety, provided with airinlets 23, and connects with a gas-pipe 24, that contains the valve 25, by which the flow of gas from the main supply-pipe may be regulated. Each section of the gas-burner is also provided with a secondary burner, which is mounted concentrically. with the curved section of the burner and is so situ-' ated as to register with the stove-hole. The secondary burner is connected to the curved section of the burner by means of an integrally-formed neck 32,that contains a gasinlet 31, Which conveys the as from the curved section to the secondary urner. The secondary burner comprises a cup-shaped body 30 with a hollow inverted cover 34, which are suitably secured together, the two of which form a chamber to receive the as from the inlet 31. The cover 34 is provided with numerous and conveniently-located perforations for discharging the gas and is also provided with the integral ribs 36, that form a level surface and provide a support for a utensil that may be deposited thereon. It will be understood that the secondary burners are situated centrally and register with the holes in the top of the range or stove.

When it is desired to employ wood or coal for fuel in the range or stove, the gas-burner may be easily removed, leaving the watercoil and hot-blast conduit in position. It will be noted that the water-coil and hot blast are mounted relatively to the fire-pot, so as to receive the full effect of the heat and flames. The hot blast when solid fuel is used performs the same function as employed in connection with the gasburnernamely, by discharging air upon the fire the heat is intensified.

In connection with the hot-blast conduit when using wood or coal for fuel I invite attention to an auxiliary air-supply source, from which the air may be secured and discharged upon a small fire near the gratebars and which would not receive the full benefit of the air discharged from the hotblast conduit 1. This source of air is received through the pouch 90, which is provided with a damper 91 for regulating the intake of air. The pouch is provided with a wall 92, that helps to form the fire-wall for the fire-pot. The fire-wall 92 is provided with numerous perforations 93, located in the lower portion of said wall and near the gratebars. By means of the damper 91 the air may be admitted into the pouch, from .which it is discharged through the perforacoil, an inlet-tube communicating with each member of the burner unit, a secondary burner centrally mounted within each member of the burner unit and on a line horizontally with the center of the hot-blast conduit, and inlet-tubes extending from the members of the burner unit to the independent burners.

2. The combination with a hot-blast con duit, of a water-coil that conforms to the outline of and lying immediately beneath said conduit but independent therefrom, a plurality of independent burners comprising a burner unit and which lie immediately beneath and independently of said water-coil, an inlet tube communicating with each member of the burner unit, secondary burners mounted above andin axial relation, vertically, with the burner unit, and an inlettube extending from the burner unit and communicating with the secondary burners.

3. The combination with a hot-blast conduit, of a water-coil that conforms to the outline of and lying immediately beneath said conduit but independently therefrom, a plurality of independent burners comprising a burner unit and which lie immediately be neath and independently. of said water-coil, an inlet-tube communicating with each member of the burner unit, star-shaped secondary burners centrally mounted within each member of the burner unit, removable covers for the secondary burners, and perforations in the secondary burner-tops to permit the discharge of the gas.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 26th day of November, A. D. 1904.

JOHN B. EHRLIOH. 

